enhancement - made reading/writing of surface files optional, made debug.xml file optional, changed how the cifti output filename is constructed (parameter is not part of it any more), see bugzilla 2096


git-svn-id: svn+ssh://svn.fcdonders.nl/home/svnroot/fieldtrip/trunk@9919 0cf7c7f0-3615-4144-b4e6-68da3bce3cd0